package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.entity.dto.DishDto;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.BeanFactoryUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private DishMapper dishMapper;
    /**
     * 新增菜品，同时保存对应的口味数据
     * @param dishDto
     */
    @Transactional
    @Override
    public void saveWhitFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);
            //获取菜品得id
        Long id = dishDto.getId();
        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors.stream().map((item->{
            item.setDishId(id);
                return item;
        })).collect(Collectors.toList());
        //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(flavors);
    }



    @Override
    public Page<DishDto> pageByName(int page, int pageSize, String name) {

        Page<DishDto> PageIofo = new Page<>(page ,pageSize);
        dishMapper.pageByName(PageIofo,name);

        return PageIofo;
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    @Override
    public DishDto gteByIdFlavor(Long id) {
        //查询菜品基本信息，从dish表查询
        Dish  dish = this.getById(id);
        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);
        //查询当前菜品对应的口味信息，从dish_flavor表查询
        LambdaQueryWrapper<DishFlavor> lqw = new LambdaQueryWrapper<>();
        lqw.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(lqw);
        dishDto.setFlavors(flavors);
        return dishDto;
    }

    @Override
    public void updateWhitFlavor(DishDto dishDto) {
        //更新dish表基本信息
            //通过id
        this.updateById(dishDto);
        //清理当前菜品对应口味数据---dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> lqw = new LambdaQueryWrapper<>();
        lqw.eq(DishFlavor::getDishId,dishDto.getId());
        dishFlavorService.remove(lqw);
        //添加当前提交过来的口味数据---dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();
        for (DishFlavor flavor : flavors) {
            flavor.setDishId(dishDto.getId());
        }
        dishFlavorService.saveBatch(flavors);
    }

    @Override
    public void removeWhitDish(List<Long> ids) {
        //select * from dish id in .... status = 1
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        lqw.in(Dish::getCategoryId,ids);
        lqw.eq(Dish::getStatus,1);
        int count = this.count(lqw);
        if (count>0){
            throw  new CustomException("当前的商品正在售卖，不能进行删除");
        }
        this.removeByIds(ids);
        //删除dishflaver表
        LambdaQueryWrapper<DishFlavor> DishFlavorlqw = new LambdaQueryWrapper<>();
        DishFlavorlqw.in(DishFlavor::getDishId,ids);
        dishFlavorService.remove(DishFlavorlqw);

    }
}
